Natural and technological hazards - Enviroportal.sk

ENVIRONMENTAL RISK FACTORSNATURAL AND TECHNOLOGICAL HAZARDSIt is necessary to avoid losse resulting from flooding, to reduce theirextent and impacts, and to influence the development of flooding. It isbeing achieved mainly by systematic prevention and by securing andsaving jobs, carried out in accordance with flooding plans andinstructions from flood controlling authorities.§ 42 article 1 Act no. 138/1973 Coll on the protection against floods(water Act)Water Quality Deterioration as a Result of Various AccidentsSince the year 1993 until 2000 the Slovak Environmental Inspection (SIŽP), department of water managementinspection notices a decreasing number of Water Quality Threatening and Deterioration Accidents (MOV). Theabove mentioned tendency is observed for surface as well for ground water. MOV trend overview is presented inthe following table.Water Quality Threatening and Deterioration Accidents (MOV) in SR for years 1993 – 2000Special water deterioration (MOV)no. of MOVsyearSurface waterGround waterrecorded by SIŽP boundaryoverall count watercourses and basins overall count Pollution Threateningwatercouress1993 142 95 3 12 47 10 371994 121 82 5 7 39 10 291995 129 73 5 11 56 8 481996 117 71 1 10 46 7 391997 109 63 0 6 46 14 321998 117 66 2 1 51 10 411999 98 61 2 9 37 3 342000 82 55 2 9 27 3 24Source: SIŽPFrom the perspective of Water Contaminants Types (WCT), during 1993 – 2000 oil substances contributed toMOV in the greatest extent. Unspecified WCT contributed to MOV in significant number.MOV trend according to the WCTs in the years 1993 – 2000Water detrimental substance type 1993 1994 1995 1996 1997 1998 1999 2000 Oil substances 70 63 76 69 50 61 54 33 Alcali 5 3 3 5 10 3 5 2 Pesticides 2 1 0 1 1 3 1 0 Excrements of farm animals 8 9 11 14 8 3 7 5 Silage fluids 0 0 0 1 1 0 2 4